inventory and its ui

Former-commit-id: b1a073c5636ac4516e6c9cf41bb97a844057de3f

src/net/torvald/terrarum/UIItemInventoryElem.kt

@@ -0,0 +1,101 @@
+package net.torvald.terrarum
+
+import net.torvald.terrarum.gameitem.InventoryItem
+import net.torvald.terrarum.ui.UICanvas
+import net.torvald.terrarum.ui.UIItem
+import net.torvald.terrarum.ui.UIItemTextButton
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Image
+
+/**
+ * @param amount: set to -1 (UIItemInventoryElem.UNIQUE_ITEM_HAS_NO_AMOUNT) for unique item (does not show item count)
+ *
+ * Note that the UI will not render if either item or itemImage is null.
+ *
+ * Created by SKYHi14 on 2017-03-16.
+ */
+class UIItemInventoryElem(
+        parentUI: UICanvas,
+        override var posX: Int,
+        override var posY: Int,
+        override val width: Int,
+        var item: InventoryItem?,
+        var amount: Int,
+        var itemImage: Image?,
+        val backCol: Color = Color(0,0,0,0),
+        val backColBlendMode: String = BlendMode.NORMAL
+) : UIItem(parentUI) {
+
+    companion object {
+        val height = 48
+        val UNIQUE_ITEM_HAS_NO_AMOUNT = -1
+    }
+
+    override val height = UIItemInventoryElem.height
+
+    private val imgOffset: Float
+        get() = (this.height - itemImage!!.height).div(2).toFloat() // to snap to the pixel grid
+    private val textOffsetX = 52f
+
+    override fun update(gc: GameContainer, delta: Int) {
+        if (item != null) {
+
+        }
+    }
+
+    override fun render(gc: GameContainer, g: Graphics) {
+        if (item != null && itemImage != null) {
+            g.font = Terrarum.fontGame
+
+
+            if (mouseUp) {
+                BlendMode.resolve(backColBlendMode)
+                g.color = backCol
+                g.fillRect(posX.toFloat(), posY.toFloat(), width.toFloat(), height.toFloat())
+            }
+
+
+            blendNormal()
+
+            g.drawImage(itemImage!!, posX + imgOffset, posY + imgOffset)
+
+            // if mouse is over, text lights up
+            g.color = item!!.nameColour * if (mouseUp) Color(0xffffff) else UIItemTextButton.defaultInactiveCol
+            g.drawString(item!!.name, posX + textOffsetX, posY + 0f)
+
+
+            if (item!!.maxDurability > 0.0) {
+                // TODO durability gauge
+            }
+        }
+    }
+
+    override fun keyPressed(key: Int, c: Char) {
+    }
+
+    override fun keyReleased(key: Int, c: Char) {
+    }
+
+    override fun mouseMoved(oldx: Int, oldy: Int, newx: Int, newy: Int) {
+    }
+
+    override fun mouseDragged(oldx: Int, oldy: Int, newx: Int, newy: Int) {
+    }
+
+    override fun mousePressed(button: Int, x: Int, y: Int) {
+    }
+
+    override fun mouseReleased(button: Int, x: Int, y: Int) {
+    }
+
+    override fun mouseWheelMoved(change: Int) {
+    }
+
+    override fun controllerButtonPressed(controller: Int, button: Int) {
+    }
+
+    override fun controllerButtonReleased(controller: Int, button: Int) {
+    }
+}